package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
       Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
        //插入菜品
        dishMapper.insert(dish);
        //插入n种口味
        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors !=null && flavors.size()>0){
          flavors.forEach(dishFlavor ->
                  dishFlavor.setDishId(dishId));
            dishFlavorMapper.insertBatch(flavors);}



        }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page=dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //菜品是否能删除
        for (Long id : ids) {
            Dish dish=dishMapper.getById(id);
            if(dish.getStatus()== StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }

        }

        //是否关联套餐

        List<Long> setmealId=setmealDishMapper.getSetmealIdByDishId(ids);
        if(setmealId!=null && setmealId.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //删除菜品数据
//        for (Long id : ids) {
//            dishMapper.deleteById(id);
//            //删除口味
//            dishFlavorMapper.deleteByDishId(id);
//        }
        //批量删除菜品
        dishMapper.deleteByIds(ids);
        dishFlavorMapper.deleteByDishIds(ids);


    }

    @Override
    public DishVO getByIdWithFlavor(long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> dishFlavors=dishFlavorMapper.getByDishId(id);

        DishVO dishVO=new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);


        return dishVO;
    }

    @Override
    public void updateDishWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);

        dishMapper.update(dish);

        dishFlavorMapper.deleteByDishId(dishDTO.getId());
        List<DishFlavor> flavors=dishDTO.getFlavors();
        if(flavors !=null && flavors.size()>0){
            flavors.forEach(dishFlavor ->
                    dishFlavor.setDishId(dishDTO.getId()));
            dishFlavorMapper.insertBatch(flavors);}

    }
    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    @Override
    public void updatestatus(long id, int status) {
        dishMapper.status(id,status);
    }

    @Override
    public List<Dish> list(Long categoryId) {

        Dish dish = Dish.builder().categoryId(categoryId).status(StatusConstant.ENABLE).build();

        List<Dish> list=dishMapper.list(dish);
        return list;
    }


}




